The sources checked do not record Romby as a personal name or give it any meaning.
Playful
Cool
Gold, Black, White, Brown
Small
Unisex
English
R
5 Letters
English given name and nickname, often for Roland or Rolland
Recorded as a given name in Danish (masculine); German Bille is a river name and a word related to Beil
An English surname
A playful and fun character